tertiääisiin
Tertiary can refer to several concepts depending on the context. In education, tertiary education follows secondary education and includes universities, colleges, and vocational schools. It is the level where specialized knowledge and advanced degrees are pursued. In economics, tertiary industries are those that provide services rather than producing tangible goods. This sector includes retail, healthcare, education, and finance, and is often the largest part of a developed economy. In ecology, tertiary consumers are animals that eat secondary consumers. They are at the top of the food chain and are typically predators. For example, a lion that eats a hyena, which in turn ate a zebra, would be a tertiary consumer. In chemistry, the term "tertiary" describes a chemical structure where a central atom is bonded to three other atoms or groups. A common example is a tertiary alcohol, where the hydroxyl group is attached to a carbon atom that is itself bonded to three other carbon atoms. The specific meaning of tertiary is therefore determined by the field of study or discussion.